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Publication numberUS1370251 A
Publication typeGrant
Publication dateMar 1, 1921
Filing dateMay 17, 1919
Priority dateMay 17, 1919
Publication numberUS 1370251 A, US 1370251A, US-A-1370251, US1370251 A, US1370251A
InventorsRussell H Wilhelm
Original AssigneeIngersoll Rand Co
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Pinning-out machine for drill-steels
US 1370251 A
Abstract  available in
Previous page
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Claims  available in
Description  (OCR text may contain errors)



1,370,251.. Patented'mr. 1 1921.




I "1,370,25 1 Patented Mar. 1,1921.




1,370,251 Patented Mar. 1,1921





Specification of Letters Patent.

Patented Mar. 1, 1921.

Application led May 17, 1919. Serial No. 297,892.

To aZZ 'whom it may concern.'

Be it known that I, RUssnLL H. VILHELM, a citizen of the United States, residing at Easton, in the county of Northampton and State of Pennsylvania, have invented a certain new and useful Improvement in Pinning-Out Machines for Drill-Steels, of which the following is a specification.

This invention relates to a pinning out machine for drill steels.

The objects of the present invention are to provide a machine in which a drill steel may be securely clamped in position and a pin forcibly pushed into the central hole with which this class of drill steel is provided, in order to clear the hole after the forging of either the bit or the lug end of the steel has been completed. Particularly, it is an object of the present invention to control the elements forming this pinning out machine by means of a single valve which may be operated by a single conveniently mounted handle; movement of the handle in the forward direction first closing the jaw members of the vise, a continued movement causing the pin to be pushed 'forwardly. A slight rearward movement of the handle from this extreme forward position, causes'the pin to be pulled out of the steel and a continued movement rearwardly of the handle causes the jaw members ofthe vise to open and release the drill steel.

A further object of the invention is to convey'the fluid exhausted from one of the cylinders tothe point of the reciprocable pin to prevent the pin from becoming overheated.

With these and other objects in view my invention consists in the features of construction and operation set forth in the following specification.

In the figures of the drawing annexed hereto:

` Figure 1 shows a front end view of the complete pinning out tool, parts being shown in section at one side to more clearly illustrate the construction.

Fig. 2 a side view of the complete machine, parts being shown in section.

Figs. 3 to 8 show diagrammatically the position of the valve assumed when the handle is in its differentoperating positions.

Referring more particularly to the figures have a movement sufficient to allow the maximum size drill steel ordinarily used to be placed between them and securely grasped. The jaw members 6 and 7 are operated to grasp the drill steel by means of a toggle mechanism comprising arms 8 and 9 adjoining and pivotally connected to the blocks in which the jaw members 6 Yand 7 are fitted by means of suitable pins 10 and 11. Pivoted about pins 14 and 15 lo cated at either side of the machine in the body member 2 are arms 16 and 17. The upper ends of arms 16 and 17 join respectively the arms 9 and S and are attached thereto by means of pins 18 and 19. The

vlower ends of the arms 16 and 17 are provided` with suitable holes through which extendk pins 20 and 21 to which arms 22 and 23 are attached. Arms 22 and 23 intercept each other at their lower ends and are pivotally Vattached to a pin 25 secured in Aa cross head 26 at the upper end of piston rod 27. At the lower end of piston rod 27 is located a piston 28 operating within a' cylinder 29, the piston rod 27 extending through a suitable stuffing box 29A. Cylinder 29 is supplied with motive fluid under pressure at points above and below the piston 28 by means of pipes 30 and 31, air being admitted to these pipes in accordance with movement of a valve 32, the movement of which will be more clearly described later. With the piston in its lowermost position the vise jaw members 6 and 7 are in their open position, movement upwardly of the piston 28 closing the members 6 and 7 tightly about the drill steel.

Vithin the cylinder 4 mounted at the rear end of body member 2 a piston 36 operates, carrying therewith a piston rod 37 at the forward end of which is secured a pin 5 by any suitable means as shown at 38. The

pin is in its rearmost position as s hown in 32A and another 32B Fig. 2. Fluid pressure is admitted from the valve chamber 46 in one position of valve 32 to point 47 and is emitted through an orifce 43 thus coming directly in contact with the pin 5 for the purpose of maintaining the pin 5 at a low temperature and preventing it from becoming heated to an unsafe degree. Thishas the effect of rapidly cooling the pin 5 which may have become greatly heated in being thrust forwardly into the drill steel, which when being pinned out 1s -at a red heat.

The valve 32 as shown made up of two spacedpheadsone at its rear end shown at separated from the first head 32A'by a reduced neck portion 32C as shown in Figs. 3 to 3. lt is obvious however that this valve may be of any suitable form.

V6Y andy 7 of vise 3.

Referring now to Figs. 3 to 3 the valve chamber 46 is shown diagrammatically inV which operates valve 32. The supply or moe tive fluid for the various parts of the pinning out machine is shown at 50', this may be of any form, the one shown comprising a conduit 50 in connection with the valve chamber 46Y through ports or openings 60. For convenience in Figs. 3V to 8 the ports 60 are not shown. -It will be seen that with the valve in the position shown inV Fig. 3 a supplv to any part of the mechanism is cut o Y Y The first movement of the valve 32 is rearwardly or to the right as shown in Figs. 3 to 8 to the position shown in Fig. 4. This opens supply port 50 and admits motive fluid to ports 40 and 30, thus holding the pin in itsrearmost position, and forcing pis ton 28 downwardly to open the jaw members Y A continuedrrrearward movement of valve 32 admits motive fluid to the port and pipe 31 which has the eect of raising the piston 28 within cylinder 29 and closing the jaw members 6 and 7 very firmly about the drill steel. Y This position of the valve is shown in Fig. 5.

The extreme rearward position of the valve 32 is shown in Fig'. 6 in which position port 4l is opened admitting pressure to the rear of piston 36 and pushing thepin forwardly into the drill steel inserted in the vise 3. In this position also the port 40 as well as port 30 are opened to the exhaust through the forward end 61 of the valve chamber 46 so that the pressure is released from the forward and upper ends of cylinders 4 and 29. A forward movement of valve 32 from the position shown in Fig. 6 opens communication between the port 4l and the rear end of the valve chamber 46 as shown in Fig. 7, permitting pressure in rear of piston 36 to be exhausted through pipe or conduit 45 and simultaneously opens communication between the supply port 50 and port 40 thus pulling the pin 5 rearwardly.Y The positionof valve 32 shownin Fig. 8 permits fluid to pass into port 30 thus opening the jaw members 6 and 7 of the vise 3, the cycle of operation of the machine being completed by a further forward movement of valve 32 in which the valve is in the position shown in Fig. 3.r

In order to conveniently operate the valve 32 the valve stem 63 is coupled to a reach arm 64 by means of any suitable coupling shown at 65, the reach arm 64 extending forwardly through the body member 2. At the forward end of the arm 64 a coupling 66 is provided, connecting the arm 64 with a handle lever 67 through link .68 and having a handle 69 extending upwardly conveniently located to be Vgrasped by the workman. If

desired two handles 69 may be provided symmetrically disposed on either side of the center of the machine. The valve 32 is held firmly lin its closed position by means of spring 70 pressing against the coupling 66.

It is understood that the present showing and description disclose only one specific embodiment ofmy present invention, and thatV other forms and modifications are included within the spirit and scope thereof, as expressed in the appended claims:

What I claim is: V

1. In a pinning outv machine for drill steels, in combination, a vise havinga plurality ofV movable centering jaws opened and closed by means of fluid pressure, a reciprocable pin mounted to move forwardly. and backwardly in relation tosaid j aw members, fluid operated means forpushing said reciprocable pin forwardly and pulling said Y pin rearwardly and controlling means comprising a single valve for causing'the jaws to close and clamp the drill steel with its axis in alinement with the axis of the pin Y before the pin is pushed into the drill steel.

2. In a machine for forcing a pin into and out of a drill steel, the combination of a vise having jaw'members, toggle levers operating the jaw members Aof said vise, a pin movable in alinement with the axis of said jaw members, and means including a valve and cylinders and pistonsoperatively connected to first actuate the toggle members and closey the jaw members and then push the pin forwardly, reversing the movement of said valve causing reversal ofthe pistons and iirst pulling the pin out of the drill steel and then opening the jaw members of said vise.

3. In a pinning out machine for drill ing from the pin operating means to the forward end of said pin, and means to force motive fluid from said pin operating means 10 through said conduit to cool said pin.

In testimony whereof, I have hereunto set m hand.


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3386283 *Oct 8, 1965Jun 4, 1968Bendix CorpTensile tester wedge clamp
US4403897 *Aug 29, 1980Sep 13, 1983Walker-Neer Manufacturing Co., Inc.Self-centering clamp for down-hole tubulars
U.S. Classification76/5.6, 269/34, 269/228
International ClassificationB21K5/06
Cooperative ClassificationB21J7/24, B21K29/00, B21K5/06
European ClassificationB21J7/24, B21K29/00, B21K5/06