US1587850A - Diestock-lubricating device - Google Patents

Description

June 8 1926. 1,537,850

c. J. o. HARE DIE STOCK LUBRICATIENG DEVICE Filed August 19, 1924 Juven le;

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other part of the stock.

Patented June 8, 1926.

UNITED STATES CHARLES J. OHARE, ST. PETERSBURG, FLORIDA.

DIESTOCK-LUBRICATING DEVICE.

Application filed August 19, 1924. Serial No. 732,936.

This invention relates to an improved device, which I have chosen to designate as a die stock lubricating device, that is, a device to be a part of, or in the form of an attachment for the stock disposed in a convenient position to supply oil to the cutting dies while cutting threads on a rod, pipe, or the like. It is common practice to a plumber, when using a die stock for threading pipes, to carry a small oil can and to squirt oil on the thread in making, during the rotation of the stock. Every time he uses the oil can, it is necessary to stop cutting and to reach over to a bench or other place upon which the can has been set, loeating the threads and then squirt oil on the same. This appears to be quite an unhandy method of applying the lubricant, wastes the mechanics time, and is a disadvantageous method.

What I propose to do is to equip the stock with a lubricatin device. Preferably, the device is in the form of an attachment so that it may be applied to the handle or Although, it could be built into the stock to become a part thereof. It is my idea to position the lubricating device in the position to permit it to be conveniently lubricated at the proper interval for carrying the oil directly to an obstinate portion of the metal being acted on.

In the specific embodiment of the invention illustrated in the drawing, the device is in the form of an attachment, the same being merely an oil can or reservoir with the fount disposed in close proximity to the cutting dies.

In the drawing, the single figure represents a portion of a conventional form of die stock with the attachment applied thereto, the attachment being shown partially in section to more clearly represent the specific structure.

In the drawing, the reference character 1 designates generally the stock, 2 designates the cutting dies, and 3 may represent a rod, pipe or the like to be threaded. The attachment comprises a suitably shaped can 4 provided with a filament 5 having a rem0vable closure 6. The can is internally formed to provide a cylinder 7, in which a plunger 8 is slidably mounted. The stem of the plunger extends through one end of the can and is provided with a finger knob 9 to facilitate operation. Also confined within the plunger cylinder is a coiled spring 10, which is normally retracted, to retract the plunger. Oil again is entered int the cylinder through a small port 11. no It is forced by the plunger into a cup like part 12, on the exterior of the can. If desired, a spring closed flat valve 13 is confined within the part 12 to guard against leakage of the oil when the device is not in use. The spout 14 is preferably integral with the part 12. The spout is preferably of a length to permit the downturned extremity thereof to be in close proximity to the surface of the parts 2 and 3 being acted on. In order to insure against displacement, suitable retaining means, preferably in the form of a clamping collar 15 is provided.

The can f is filled through the neck 5 and 7 the oil finds its way into the'cylinder 7 of the ports 11. The oil is forced from the cylinder by depressing the plunger 8, with the thumb piece 9. The plunger is returned to uncover the port through the medium of 30 the spring 10. The oil pressing against the valve 13 serves to open the latter and to permit it to escape into the stock 14, to be delivered onto the surface being threaded. With this arrangement, after a predetermined number of turns of the stock are made, the plunger is depressed to feed oil. Thus, it is always in position, and may be readily manipulated without requiring stopping of the stock.

While I have shown and described a specific embodiment of the invention I wish it to be understood that such disclosure has been made for the purpose of illustration only. Therefore, changes coming within the scope of the field of invention claimed may be resorted to.

I claim:

As a new article of manufacture an oil can fashioned to permit it to be detachably fitted upon a die stock handle provided with an internal cylinder, a plunger slidable in said cylinder and having its stem extending through the cylinder to the exterior of the can, said stem being provided on its outer end with a finger piece, a spring confined within said cylinder and hearing at one end against said plunger for retracting the same, said cylinder being provided in tion, a check valve disposed in said enlarged the wall with an intake port, said spring portion to close one end of said cylinder, serving to normally move said plunger to a and a clamping collar carried by the can 10 position to uncover said port, a discharge and-adapted for connection to a die stock spout in alignment with said cylinder, said handle.

spout being provided adjacent its point of Intestimony whereof Iaffix my signature. juncture with the can with an enlarged por- CHARLES J. OHARE.

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