US1191873A - Automatic tool. - Google Patents

Description

P: A. CRESSEYKL W. JONES.

AUTOMATIC TOOL.

APPLICATION FILED JUNE 14. 1915.

1,191,873. Patented Ju1y 18,1916.

I n pew-Z0715, ,Pe fierfim 66' Crease w y W i: snares raranr curios PETER AMES CRESSEY, OF MOSS BEACH, AND WILLKAM JONES, OF Lbs ANGELES,

' CALIFORNIA.

AUTOMATIC TOOL.

Specification of Letters Patent.

Application filed June '14, 1915. Serial m. 33,904.

To all whom it may concern:

Be it known that we, PETER Anus Cans- SEY and WILLIAM Jones, both citizens of the United States, residing at Moss Beach and Los Angeles, respectively, in the county of Los Angeles and State of California, have invented new and useful Improvements in Automatic Tools, of which the following is a specification.

Our invention relates to an automatic tool and more specifically to an automatic ratchet tool for tightening or loosening screws, bolts,

nuts and like securing means,and an object thereof is to provide a tool by means of which a movable structure on which screws or bolts are'secured may be maintained in a nearly stationary or braced position while removing or replacing the same.

In over-head street car constructions the feed or transmission wires are secured to hanger clamps, which are in turn secured to the cross wires. These clamps are usually made in two parts, the same being secured together by means of countersunk screws. At times it becomes necessary to remove the clamps to replace sections of the feed wire which have been worn or broken. In removing the hanger clamps the repairman often experiences difliculty in removing the countersunk screws with an ordinary driver, as the screws become corroded, and for the further reason that the feed wire is nor mally movable requiring the workman to brace the hanger with one of his hands while operating the driver with the other.

By means of our improved tool, all the above recited difliculties'are obviated, and the screws securing the hanger parts are removed expeditiously and with little or no trouble.

We accomplish the above objects by means of the device described herein and illustrated in the accompanying drawings, in which: I

Figure 1 is a side elevation of our improved toolshowing it in position for operation in removing screws from hanger clamps. Fig. 2 is a side elevation of our improved tool, the position being similar to that shown in Fig. 1. Fig. 3 is a detail elevation of the ratchet mechanism for operating the tool, the inclosing plate being removed. Fig. 4 is a perspective view of the detachable tool.

I Referring more particularly to the drawmg, our improved tool is preferably of a tong shape configuration and consists of two. members 5 and 6, pivoted as at 7 to form jaws 8 and 9 and handles 10 and 11. J aw 9 is bent outwardly as clearly shown 1n Fig. 1 of the drawing, so as to provide sufficient room between the two jaws 8 and 9 for the detachable tool 12, which tool may be a screw driver, socket wrench or like tool. Pivotally mounted on the outer face and at the upper end of jaw member 9. as at 12, is'

a ratchet casing l-it in which the ratchet mechanism is mounted, the whole being inclosed by'a plate 15 in any suitable manner.

Inclosing plate 15 is provided in the upper end thereof with an elongated transversely disposed slot 16, in which a ratchet wheel 17 is mounted. This wheel is provided with V-shaped teethso that its direct1 on of rotation'may be reversed when the pivotally mounted ratchet casing is shifted from one side to the other; the ends of the slot limiting the shifting movement of the casing. Ratchet wheel 17 is preferably provided with a centrally disposed rectangular aperture in which the end of the work tool is mounted.

Wheel 17 is also provided with an annular shoulder 18, the outer end thereof being enlarged and'knurled so that when the screw or other securing means has been loosened, the tool may be rotated manually.

Pivotally mounted in hearings in the lower I end of casing 14, their free ends projecting upwardly, are pawls'19 and 20 adapted to engage ratchet wheel 17 alternately as the casing 14 is shifted from one side to the 7 other. Seated in recesses 21 and 22 are coiled springs 23 and 24 which are adapted to bear against the pawls and normally force the same into. engagement with the teeth on ratchet wheel17, pins, 25 and 26 serving to limit'the inward movement of the pawls V when the casing is'shifted from one side to the other when it is desired to reverse the movement of the tool.

The upper edge of casing 14 is provided with two transversely disposed notches 27 and 28 that are adapted to be engaged by a latching mechanism which is mounted on one side of jaw 9, as clearly shown in Fig. 1

of the drawing. This latching mechanism 7 preferably consists of an operating rod 29 provided on the lower end thereof with a thumb-piece 30. Rod 29 is mounted in bearings 31 and 32 secured to the jaw 9.

The upper end of rod 29 is flattened and bent over into a substantially U-shaped' form, the extreme end of which terminates in a latch bar 33 adapted to engage one or the other of the notches 27 or 28 as the casing ll is shifted from one direction to the other to hold it in a stationary position. Mounted on operating shaft 29 and between bearings 31 and is a compression spring B-L which normally tends to hold the latch bea rings in engagement with the notches and to prevent its disengagement therefrom.

Jaw member 8 extends in a substantially vertical direction, the outer end thereof being provided with an aperture 35 and having a boss 36 on the inner face thereof, said boss encircling said aperture. This aperture is for the purpose of accommodating the end of the screw or bolt which projects beyond the face of the hanger clamp when the tool isapplied thereto, as will be clearly noted from Fig. 1 of the drawing.

In the form illustrated we have shown the tool as consisting of a screw driver, the outer end 37 being of usual form and the inner end 38 being reduced and of rectangular configuration so as to chamber in the aperture formed in the ratchet wheel 17.

In the operation of our improved device, the jaws are opened by handles 10 and 11 and the aperture 35 in jaw 8 permitting the passage therethrough of the end of the screw or bolt, the driver 37 engaging the slot therein. The handles are then grasped tightly together and the device is rotated from side to side until the screw is loosened, when the operator may-grasp the knurled shoulder of the ratchet wheel 17 to complete the operation.

It will be seen from the. above that we have provided a tool in which bolts or screws or other securing means may be readily secured or withdrawn from hangers and like movable structures in an expeditious manner, avoiding the necessity of using one arm of the operator to brace the hanger as in a manual operation.

\Vhat we claim is:

1. A tool, comprising a clamping jaw, a

tool holder pivotally mounted on said jaw,

a ratchet wheel secured to said tool holder, a member pivotally mounted on said jaw, a pair of dogs pivotally mounted on said member for engagement with said ratchet wheel,

stops on said member to .limit movement of said dogs, and a latching mechanism mount- 7 other, a tool mounted in' said jaw and operatively mounted within said ratchet wheel, and a latching mechanism mounted on said jaw and engaging said casing to maintain either dog in engagement with the ratchet wheel.

3. A tool, comprising a clamping jaw, a tool holder pivotally mounted on said jaw, a ratchet wheel secured to said tool holder, a member pivotally mounted on said jaw, a pair of dogs pivotally mounted on said member for engagement with said ratchet wheel, stops on said member to limit movement of said dogs, a latching mechanism mounted on said jaw engaging the said member to maintain either dog in engagement with said 'ratchet wheel, and a second jaw pivotally mounted on said first mentioned jaw for cooperation therewith.

4. A tool, comprising a pair of pivoted clamping jaws and operating means therefor, a pivoted casing mounted on one of said jaws, a ratchet wheel loosely mounted in said casing, a, pair of spring pressed dogs for engaging the said ratchet wheel, means for limiting the movement of said dogs toward each other, a tool mounted in said jaw and operatively mounted within said ratchet wheel, and a latching mechanism mounted on said jaw and engaging said casing to maintain the same stationary in either of its positions. v p

In witness that we claim the foregoing we have hereunto subscribed our names this 26th day of May, 1915.

' PETER AMES CRESSEY.

WM. JONES.

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