US1207060A

US1207060A - Marking device.

Info

Publication number: US1207060A
Application number: US98521A
Authority: US
Inventors: Elmer T Mcpherson
Original assignee: IRWIN AUGER BIT Co
Current assignee: IRWIN AUGER BIT Co
Priority date: 1915-05-20
Filing date: 1916-05-19
Publication date: 1916-12-05
Anticipated expiration: 1933-12-05

Description

E. T. McPHERSON.

MARKING DEVICE.

APPLICATION FILED MAY 19. I916.

Patented Dec. 5, 1916.

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UNITED TATES PATENT OFFICE.

ELMER T. McPI-IERSON, or WILMINGTON, onro, ASSIGNOR ro THE IRWIN AUGER Bi'r COMPANY, or WILMING'roN, OHIO, A CORPORATION or OHIO.

MARKING DEVICE.

Specification of Letters Patent.

Patented Dec. '5, 1916.

0rigina1 application filed May 20, 1915,seria1No. 29,284. Divided and this application filed. May 19, 1916. Serial No. 98,521.

T 0 all whom it may concern Be it known that I, ELMER T. MoPi-rnn- SON, a citizen of the United States, residing at IVilmington, in the county of Clinton and State of Ohio, have invented certain new and useful Improvements in Marking Devices, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to a marking device used in connection with dies for forming the shanks of boring tools.

In a co-pending application filed by me May 20th, 1915, Ser. No. 29,28 on which Letters Patent 1,18%,111 were granted May 23rd, 1916, one embodiment of a marking device was shown and described and the present application constitutes a division of the first-mentioned application.

The object of the invention is to provide an efficient and quickly operable marking device which is adapted for'use in connection with dies.

In the accompanying drawings, Figure 1 is a top plan view of a lower or anvil die showing the position of the marking device thereon; Fig. 2 is a transverse sectional view showing the marking device.

In order to show the application of the marking device to the die I have herein illustrated a lower die 1 and an upper die 2. As shown in Fig. 2 at 3 I have illustrated a shank showing the position thereof with relation to the marking device when the mark is to be applied. The dies herein shown are the same as were shown and described in the above mentioned co-pending application, but only so much thereof have been illustrated as is necessary for the purposes of this application. It is to be understood, however, that the marking device is applicable to dies of different natures and different kinds. These dies, however, comprise angular recesses 4 and curved recesses 5 which cooperate to form the roughed out portions of the tool. The angular recess is preferably V-shaped, as shown, and the end is closed by means of a stop 6 which was more fully described in the other application. Those ends of the cooperating portions of the die opposite the stop are enlarged, as shown at 7 to receive and permit the rotation of the uniformed portion of the blank. n order to finish theround. h

provided the

recesses

8 and 9 arranged centrally upon the die for the purposes fully described in the co-pending application. Adjacent one side of the dies and extending inwardly from the sides thereof I have provided fiat portions 10. The final operation is imparted to the shank of the boring tool in this portion of the die. To insure that several shanks will be of uniform character as to length and size I have provided the portions 10 with a stop 11 so that the shanks will be located in the sameposition upon this portion of the dies, thereby insuring that the impact will be of a uniform nature and of the same extent when operating upon any of several shanks. The end opposite the stop 11 is provided with a rest 12.

After the finishing of the round and shank of the bit or boring tool it is customary to place upon the shank a mark, such as a numher, to indicate the size or number of the bit. This is usually done by means of a marking tool and by hand. In the present instance, however, I have provided one die with a marking device which is supported adjacent to the flat portions 10 in order that the shank which is being operated upon can be easily placed beneath the marking device by sliding it to one side, as shown in Fig. 2, after the same has been finished in the finishing portions 10 of the die. As here shown, this marking device comprises a resilient bar or finger 13 mounted at the side and having a substantially horizontal portion 14 extending into the space formed between the dies at that side and above the lateral portion of the part 10 of the lower die. This finger is so arranged that the finished shank of the bit can be slipped beneath the same and on the next blow of the hammer the upper die will strike the finger and place the mark on the shank of the bit, it being understood of course that the lower side of the finger is provided with a type face 15 of such a kind as to make the desired mark. The upper die is cut away along its outer edge, as shown at 16, to accommodate the marking finger and to prevent the same from being driven too far into the metal when the shank of the bit is placed beneath the same. This resilient finger may be mounted in any suitable manner. It is, however, preferably made separate from the die o th t t can e chan d and n w w her given the die when it is recut, as was explained in my said co-pending application. In the present instance the resilient finger has a vertical portion or shank 17 by means of which it is held in position along the side of the lower die 1, this being accomplished by forming a recess in the liner 18, by means of which the die is secured in position, and inserting the upright or shank of the marking finger in this recess.

While the marking device in this case has been shown in connection with a die of the nature shown and described in the co-pending application above mentioned, it is to be understood that the marking device can be used in dies of different kinds and that the specific features thereof can be varied, as I do not desire to be limited to what is actually shown and described except as specified in the claims or the state of the art requires.

Having thus fully described my invention, what I claim as new and desire to secure by Letters Patent, is

1. In a device of the character described,

an anvilldie, a resilient bar having a vertical portion fixed at one side of said anvil die, and an intermediate portion looped with the end thereof extending horizontally over the die, a marker on said end, and a hammer die.

2. In a device of the character described,

a hammer die and an anvil die, a recess in the hammer die extending from one side thereof inwardly, a resilient bar mounted at said side of the anvil die and having an end projecting into said recess, and a marker on said end.

3. In a device for forging auger bits, a lower die and an upper die, said dies having portions sunken therein,.extending from one side inwardly, and a marking device mounted at said side and extending into the space between said portions.

4. In a device for forging auger bits, a lower die and an upper die, said dies having portions sunken therein extending from one side inwardly, a resilient marking device mounted at said side and extending into the space between said portions and the portion of the upper die being recessed to receive the end of said marking device.

5. In a device of the character described,

hammer and anvil dies provided with sunken portions extending from one side inwardly, a recess in the sunken portion of the hammer die extending from said side inwardly, a resilient bar mounted at said side of the anvil die and having its end extending into said recess and a marker on said end projecting outside of the recess.

In testimony whereof, I afiix my signature.

ELMER T. MCPHERSON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G.